214 BULLETIN 92. UNITED STATES NATIONAL MUSEUM. 



Cheirurus hydei (Weller). 



Ceraurus hydei Weller, Bull. Chicago Acad. Sci., Nat. Hist. Surv., 4, pt. 2, 1907, 



p. 264, pi. 24, fig. 22. 

 Cheirurus hydei Raymond and Barton, Bull. Mus. Comp. Zool., 54, 1913, p. 542 



(gen. ref.) 

 Niagaran (Racine) : Near Lemont, Illinois. 



CHEIRURUS ICARUS Billings. See f eraurinus icarus. 

 CHEIRURUS MARS Hudson. See Nieszkowskia marc. 

 CHEIRURUS MERCURIUS Billings. See Pseudosphaerexochus mercurius. 



Cheirurus niagarensis (Hall). 



Ceraurus insignis Hall (not Beyrich), Pal. New York, 2, 1852, pp. 300, 303, pi. 



66A, fig. 4; pi. 67, figs. 9, 10; Geol. Surv. Wisconsin, 1, 1862, p. 433; adv. 



sheets 18th Rep. New York State Cab. Nat. Hist., 1865, p. 31; 20th Rep. 



New York State Cab. Nat. Hist., 1867, p. 335. 

 Ceraurus bimucronatus Roemer (not Murchison), Sil. Fauna West Tennessee, 



1860, p. 80, pi. 5, fig. 19. 

 Sphaerexochus romingeri? Hall, 28th Rep. New York State Mus. Nat. Hist., doc. 



ed., 1877, pi. 32, fig. 16. 

 Ceraurus niagarensis Hall, 20th Rep. New York State Cab. Nat. Hist., 1867, p. 



376, pi. 21, figs. 10, 11; rev. ed. 1870, p. 427, pi. 21, figs. 10, 11; llth Rep. 



Dep. Geol. Nat. Hist. Surv. Indiana, 1882, p. 335, pi. 34, fig. 16; pi. 33, fig. 



10. Chamberlin, Geol. Wisconsin, 1, 1883, p. 195, fig. Whiteaves, Geol. 



Surv. Canada, Pal. Foss., 3, pt. 1, 1884, p. 42; pt, 2, 1895, p. 107. Van 



Ingen, School of Mines Quart,, 23, 1901, p. 35. Weller, Bull. Chicago Acad. 



Sci., Nat. Hist. Surv., 4, pt, 2, 1907, p. 263, pi. 24, figs. 20-21. 

 Ceraurus (Cheirurus) niagarensis Hall, 28th Rep. New York State Mus. Nat. 



Hist., mus. ed., 1879, p. 189, pi. 32, fig. 16. 

 Ceraurus (Crotalocephalus) niagarensis Kindle, 28th Ann. Rep. Dep. Geol. Nat. 



Res. Indiana, 1904, p. 483, pi. 23, figs. 1-2; pi. 24, fig. 8. Grabau and Shimer, 



N. A. Index Fossils, 2, 1910, p. 319, fig. 1633. 

 Cheirurus niagarensis Raymond and Barton, Bull. Mus. Comp. Zool., 54, 1913, p. 



542 (gen. ref.). 

 Niagaran (Rochester to Guelph): Rochester, etc., New York; Ontario; Indiana; 



Tennessee; Wisconsin; Illinois; etc. 



CHEIRURUS NUMITOR Billings. See Ceraurus numitor. 



Cheirurus nuperus Billings. 



Cheirurus nuperus Billings, Cat. Sil. Fossils Anticosti, Geol. Surv. Canada, 1866, 



p. 60, fig. 20. 



Ceraurus nuperus Miller, N. A. Geol. Pal., 1889, p. 538 (gen. ref.). 

 Anticostian (Gun River Chicotte): East Point, etc., Anticosti. 



CHEIRURUS PERFORATOR Billings. See Nieszkowskia perforator. 

 CHEIRURUS PLEUREXANTHEMUS Billings. See Ceraurus pleurexanthemus. 

 CHEIRURUS POLYDORUS Billings. See Ceraurinus polydoms. 

 CHEIRURUS POMPILIUS Billings. See Ceraurinus pompilius. 

 CHEIRURUS PROLIFICUS Billings. See Pseud osphaerexochus vulcanus. 

 CHEIRURUS SATYRUS Billings. See Nieszkowskia satyrus. 



